public class ImportOptions 

var workbook = Workbook.Create( "test.xlsx" );

var worksheet = workbook.Worksheets[ 0 ];

// Define a list of strings, the import options(vertical by default) and call the ImportData function.

  var stringData = new List<string>() { "First", "Second", "Third", "Fourth" };
  var stringImportOptions = new ImportOptions() { DestinationTopLeftAddress = "B5" };
  worksheet.ImportData( stringData, stringImportOptions );

workbook.Save();